89401812 has 24 divisors (see below), whose sum is σ = 213693312. Its totient is φ = 29073600.

The previous prime is 89401801. The next prime is 89401889. The reversal of 89401812 is 21810498.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90364 + ... + 91347.

It is an arithmetic number, because the mean of its divisors is an integer number (8903888).

Almost surely, 2^89401812 is an apocalyptic number.

89401812 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

89401812 is an abundant number, since it is smaller than the sum of its proper divisors (124291500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89401812 is a wasteful number, since it uses less digits than its factorization.

89401812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181759 (or 181757 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 89401812 is about 9455.2531430946. The cubic root of 89401812 is about 447.1454066034.

The spelling of 89401812 in words is "eighty-nine million, four hundred one thousand, eight hundred twelve".